Pneumatics Final Exam Questions With Verified Answers

EXAM STUDY MATERIALS July 26, 2024 9:30 AM Pneumatics Final Exam Questions With Verified Answers. The ___ of an applied force is transmitted equally in all directions throughout a confined fluid under the form of fluid pressure. - answer✔✔intensity When forces are multiplied with a fluid power system, ___ is sacrificed. - answer✔✔distance An actuator converts fluid pressure into ___ force - answer✔✔mechanical At sea level, a vacuum gage reads 6 in. Hg which is actually 24 in Hg on the ___ scale. - answer✔✔absolute A ___ pressure gage is generally more accurate than a plunger type gage. - answer✔✔bourbon tube An intensifier multiplies fluid ___. - answer✔✔pressure ___ inches of mercury vacuum is the same as atmospheric pressure. - answer✔✔29.92 When a gas volume is reduced as in a compressor, gas ___ increases and temperature ___. - answer✔✔pressure, increases A hot gas has ___ molecules than a cool gas. - answer✔✔faster moving In a pneumatic system, the potential energy of compressed air is tran sformed into ___ - answer✔✔kinetic energy and heat. Flow rate in a pneumatic system is expressed as ___ - answer✔✔CFM When a gas volume is expanded, gas pressure ___ and ___ decreases. - answer✔✔decreases, temperature In a pneumatic system, fluid flow occu rs when air is allowed to ___ - answer✔✔expand. Inefficiency in a pneumatic system is generally the result of ___ - answer✔✔friction, fluid changing direction, and heat of compression. ___ air is defined as air at sea level with a temperature of 68 degrees Fahrenheit and a relative humidity of 36%. - answer✔✔Standard EXAM STUDY MATERIALS July 26, 2024 9:30 AM Critical velocity in a pneumatic system is achieved when downstream pressure reaches ___ of upstream pressure. - answer✔✔53% In what condition is a pressure regulator found? - answer✔✔A normall y open condition. What function does a pressure switch perform in a pneumatic system? - answer✔✔Cuts in and cuts out a compressor. What insures that the stored pressure energy of an air receiver is not unnecessarily wasted at an actuator? - answer✔✔A press ure regulator. Where must pressure be controlled in a pneumatic system? - answer✔✔After a compressor and after an air receiver. What determines an actuator's speed of doing work? - answer✔✔The speed at which an actuator is filled and exhausted of air. How does a flow control valve in a pneumatic system work? - answer✔✔It operates by causing a restriction. How must energy in a pneumatic system always be used? - answer✔✔Under complete control. What do valves control in a pneumatic system? - answer✔✔Direction of flow, rate of flow, and maximum pressure. What do all valves basically consist of? - answer✔✔A body and an internal moving part. In what condition is a safety relief valve found? - answer✔✔A normally closed system. Compressors convert mechanical energy transmitted by a prime mover into ___ energy of compressed air. - answer✔✔potential A two stage piston compressor has a(n) ___ where compressed air is cooled while passing to a second stage. - answer✔✔intercooler Compressor may be displacement or ___ - answer✔✔dynamic. As altitude increases the output capacity of an air compressor ___ - answer✔✔decreases. According to OSHA, an unprotected person at work amy occupy a room for ___ hours at a sound level of 100 dBA. - answer✔✔two When ventilating a compressor house, the inlet should enter ___ while the outlet should exit ___ to prevent stratification. - answer✔✔high, low There are two types of helical compressors: ___ and ___ - answer✔✔dry, flooded. This compressor is a dynamic type, it is a ___ compressor - answer✔✔centrifugal